linux-kernel - [RFC][PATCH 07/42] create_pipe_files(): use fput() if allocation of the second file fails

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Date:   Wed, 11 Jul 2018 03:21:31 +0100
From:   Al Viro <viro@...IV.linux.org.uk>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Miklos Szeredi <mszeredi@...hat.com>
Subject: [RFC][PATCH 07/42] create_pipe_files(): use fput() if allocation of the second file fails

From: Al Viro <viro@...iv.linux.org.uk>

... just use put_pipe_info() to get the pipe->files down to 1 and let
fput()-called pipe_release() do freeing.

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
 fs/pipe.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/fs/pipe.c b/fs/pipe.c
index bb0840e234f3..9405e455f5b1 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -771,8 +771,9 @@ int create_pipe_files(struct file **res, int flags)
 
 	res[0] = alloc_file(&path, FMODE_READ, &pipefifo_fops);
 	if (IS_ERR(res[0])) {
-		err = PTR_ERR(res[0]);
-		goto err_file;
+		put_pipe_info(inode, inode->i_pipe);
+		fput(f);
+		return PTR_ERR(res[0]);
 	}
 
 	path_get(&path);
@@ -781,8 +782,6 @@ int create_pipe_files(struct file **res, int flags)
 	res[1] = f;
 	return 0;
 
-err_file:
-	put_filp(f);
 err_dentry:
 	free_pipe_info(inode->i_pipe);
 	path_put(&path);
-- 
2.11.0